SIP-5ng (AsXSn) is a self-supporting insulated wire featuring a round aluminum conductor and flame-retardant, UV-resistant cross-linked polyethylene (XLPE) insulation. It is designed for 0.6/1kV overhead power distribution lines, especially in dense urban environments. This wire does not include a load-bearing messenger, making it suitable where the conductor bundle itself carries the mechanical load.
The SIP-5ng wire provides enhanced safety and installation flexibility compared to traditional bare conductors, with significantly reduced risk of short circuits, lower transmission losses, and compatibility with space-constrained layouts.
Key Applications
Overhead low-voltage distribution networks (0.6/1kV, 50Hz)
Urban and residential power transmission
Facade-mounted installations
Areas requiring flame-retardant and sunlight-resistant cables
Modern replacements for bare aluminum conductors in existing lines
Advantages Over Bare Conductors
No short circuits between phases due to solid insulation
Reduced mechanical failures from wire crossing or external contact
Smaller support structures can be used (e.g., wooden poles or compact concrete masts)
Closer installation near buildings thanks to insulated core
Lower energy losses due to reduced inductive reactance
Supports facade or wall-mounted layouts for urban installation
Fire-resistant XLPE insulation ensures higher safety
Construction Details
| Component | Description |
|---|---|
| Core Material | Compact round aluminum, multi-stranded (16–120 mm²) |
| Twisting | Conductors twisted with a pitch ≤ 450 mm; right-hand lay up to 25 mm² |
| Insulation | UV-resistant, flame-retardant XLPE (cross-linked polyethylene) |
| Messenger Wire | None (self-supporting design) |
| Armor / Shield | None |
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage | 0.6/1 kV |
| Frequency | Up to 50 Hz |
| Operating Temperature Range | -60°C to +50°C |
| Minimum Installation Temperature | -20°C |
| Max Continuous Operating Temp. | 90°C |
| Permissible Overload Temp. (8h/day) | 130°C |
| Short-Circuit Temp. (≤5 sec) | 250°C |
| Minimum Bending Radius | 10 × cable diameter |
| Service Life | ≥ 25 years |
Common Sizes and Mechanical Properties
| Wire Type | Nom. Conductor Dia (mm) | Outer Dia (mm) | Weight (kg/km) | Breaking Load (kN) | Insul. Thickness (mm) |
|---|---|---|---|---|---|
| SIP-5ng 2×16 | 4.8 | 16.8 | 138.1 | 5.0 | 1.2 |
| SIP-5ng 4×16 | 4.8 | 20.2 | 276.2 | 9.8 | 1.2 |
| SIP-5ng 4×25 | 6.0 | 23.4 | 400.5 | 15.4 | 1.2 |
| SIP-5ng 4×35 | 7.0 | 26.1 | 521.2 | 21.5 | 1.2 |
| SIP-5ng 4×50 | 8.4 | 30.9 | 730.8 | 30.7 | 1.4 |
| SIP-5ng 4×70 | 9.8 | 34.6 | 983.1 | 43.0 | 1.6 |
| SIP-5ng 4×95 | 11.6 | 39.9 | 1304.6 | 58.4 | 1.7 |
| SIP-5ng 4×120 | 13.0 | 43.6 | 1624.4 | 73.7 | 1.7 |
Abbreviation Breakdown
SIP – Self-supporting Insulated Wire
ng – Non-flame-propagating insulation
AsXSn (European equivalent):
A – Aluminum conductor
s – Self-supporting
XS – XLPE insulation, UV resistant
n – Flame retardant insulation
Contact Us
TOT Wire & Cable provides reliable SIP-5ng (AsXSn) wires for overhead distribution systems. For technical support, certifications, or bulk pricing, contact us today — we’re ready to help with your next power distribution project.